Introduction to the Seven Sisters Trees: The first five of the Seven Sisters trees are Qinling firs, and the last two are Daqingguo trees, all of which are over 300 years old. According to legend, an honest official died of a sudden illness here on his way to take office. After he was buried on the spot, his seven daughters heard the bad news and came all the way to pay their respects and planted these seven precious trees to express their grief.